Seudónimo
Seudónimo
08-12-2017
Mathematics
contestada
please help thank you.
Respuesta :
Bladerunner1976
Bladerunner1976
08-12-2017
1st is D
2nd is
5x + 4 + 7x + 2 = 90
12x + 6 = 90
12x = 84
x = 7
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